The Climatic Probability of Snowfall Induced by Cooling-Tower Plumes

by Francis W. Murray


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Previous work has shown that if the temperature in a cooling-tower plume is colder than -13 deg C and the difference between actual and saturation vapor density is less than 0.5 gram per cubic meter, snow is likely to be produced in the plume even though no natural snow may occur in the vicinity. This study applies these criteria to all the upper-air soundings from 11 selected stations during the four winter months over an eight-year period to determine probabilities of this type of anomalous snowfall. Results of this pilot study suggest that it would be worthwhile to extend the analysis to more stations and additional time periods.

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